Fody MethodDecorator on assembly level

Question

I'm trying to use fody with MethodDecorator on assembly level.

I tried to use the attribute provided by the sample code without any changes:

[AttributeUsage(AttributeTargets.Method | AttributeTargets.Constructor | 
AttributeTargets.Assembly | AttributeTargets.Module)]
public class InterceptorAttribute : Attribute, IMethodDecorator {
    // The code of the implemented methods doesn't matter.
}

If I decorate a method using [Interceptor] all is working as expected.

But I try to intercept every method in my assembly. The sample code targets this attribute to AttributeTargets.Assembly. That signals me that this might be working.

To get that done I added [assembly: InterceptorAttribute] to AssemblyInfo.cs of my project.

The code still compiles without any error but the interceptor will not be called.

The same happens if I use [module: Interceptor].

What do I have to do to get this working?
Is there any other way to intercept every method in an assembly/module?

UPDATE

I found MethodBoundaryAspect that works as expected.

Answer 1

You can do this by implanting the Attribute class from the IAspectMatchingRule interface. Like this;

[AttributeUsage( AttributeTargets.Method | AttributeTargets.Constructor | AttributeTargets.Class | AttributeTargets.Module | AttributeTargets.Assembly, AllowMultiple=true)] public class MatchingDecoratorAttribute : Attribute, IAspectMatchingRule, IMethodDecorator

The IAspectMatchingRule interface includes the AttributeTargetTypes property to allow filtering methods in the assembly. After you create the attribute this way, you can apply it in the AssemblyInfo.cs file as follows;

[assembly: MatchingDecorator(AttributeTargetTypes="SimpleTest.DerivedMatchingAssembly.*")]

Fody MethodDecorator Allow global application of method decorations by attribute #45